Unlike most of my friends, I'm not one of those who gets invitations to lush parties or have appointments with different friends to "do lunch" or have engagements at this event or the other. There are only a handful of people I do spend time with and they are usually the same people. I rarely feel obligated to meet someone just because we were friends once upon a time. I only meet the friends who I really want to meet because I enjoy their company or if they need me, never out of courtesy. And the last reason I'd have to go frolicking around with acquaintances is to expand my "contacts" or broaden my circle of friends because I don't need to. I don't like meeting strangers unless they are good friends of already close friends. If that isn't the case, leave me out of it. I'm fine not being able to walk around the mall waving to every 10th person I see thanks.
I have more than enough great friends in my life and I really could not ask for more.
Therefore I basically live my life on my own time. But that does not make my time disposable to everyone else.
But just because I don't whine about how "I don't have the time" because I stuck several obligations up my ass doesn't mean my time is dispensable.